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STEM WINDING WATCH.

N0..f374,760. Patented Dec. 13, 1887.

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STEM WINDING WATCH.

Patented Dec, 13, 1887.

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UNITED STATES PATENT OFFICE.

SIDNEY CALVERT SMITH, OF NEW YORK, N. Y.

STEM-WINDING WATCH.

SPECIFICATION forming part of Letters Patent No. 374,760, dated December 13, 1887.

(No model.)

To aZZ whom, it may concern:

Be it known that I, SIDNEY CALVERT SMITH, a citizen of the United States, residing at New York, in the county of New Yorkand State of New York, have invented certain new and useful Improvements in Steni-VVinding Watches; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

My invention relates, generally, to that class of watches which are wound and set by means of the stems, thus dispensing with the use of keys, and particularly to that class of stem winding and setting watches in which the Breguet clutch-spring is employed.

The object of my invention is to provide improved mechanism for effecting the setting of the hands of open-faced and hunting stemwinding watches by means of their stems, and for permitting the ready removal of the crowns and stems from such watches.

To these ends my invention consists in a stem winding and setting watch provided with an arm or lever which serves to operate the clutch-controlling spring and the sliding double clutch-wheel for alternately engaging and disengaging the winding and setting mechanisms, as desired; in the peculiar devices for operating the arm or lever and securing it in or out of operative position, and in certain other peculiar features of construction and arrangement or combination of parts, as hereinafter disclosed in the description and claims.

In order thatmy invention may be definitely disclosed and fully understood, I will proceed to describe the same in connection with the accompanying drawings,wherein the same letters of reference indicate the same parts, and in which Figure 1 represents a plan view of a stem winding and setting watch-movement with my improvements applied, the dial being removed to expose the parts of the mechanism on that side of the watch and to show the general arrangement of the mechanism. Fig. 2 isa reverse plan View of the watch-movement with the bridge side up and dial down, also showing the stem in place and the collar of my improvement. Fig. 3isa central transverse section of the same in the line of the stem. Fig. e illustrates certain detached details hereinafter referred to. Fig. 5 is a detail plan view showing the U-shaped arm or lever engaging the clutch-controlling spring and the mechanism in position for setting the hands; and Fig. 6 is a sectional detail view on line a: at, Fig. 1, showing in dotted lines the U- shaped arm or lever raised and out of engagement with the groove in the stem.

In the drawings, A designates the move ment of the watch, B and O the wheelsof the winding mechanism, Fthe pinion upon the minute-arbor, and D, E, and n the pinions or wheels of the setting mechanism, all of which are of the usual or any preferred construction and arrangement.

I and J are the supports or bridges for the bearings of the various gear-wheels.

L designates the winding and setting stem which enters the case and extends through the winding-pinion M and also through the sliding double clutch-wheel N,which meshes alternately with the winding-pinion M and the pinion n of the setting mechanism.

0 designates the clutch controlling spring for moving the clutch in one direction, said spring being rigidly secured at one extremity, as at 0, while the opposite extremity, 0, engages in agroove of the sliding double clutchwheel N. of the clutch wheel and clutch controlling spring is the same or about the same as that of the well-known Breguet winding mechanism.

P designates a steel arm or lever which is of substantially U form at the point p, and one end thereof is formed with a straight extension, 1). This arm or lever has for its center of movement an arbor, 19 which extends through the dial-plate and snugly fits a hole therein. This arbor is screw-threaded at its outer end, as shown, to receive an internallythreaded collar, Q, which serves to hold the arbor securely in position, while allowing the arm or lever to move freely upon the center of said arbor; or in lieu of this construction and arrangement ofparts I may employ aninternally screw-threaded socket formed in said arbor p and an ordinary screw inserted into said socket for holding said arbor in proper position, the collar Q, in this instance being dispensed with. The straight portion 19 of the lever isprovided with a pin, 12 which fits into a groove, Z, of the stem L.

The free end of the arm or lever P is inclined or beveled off, as shown at p, and the free eX- tremity of the clutch-spring O is provided with a notch, o, to receive and hold said end f, as hereinafter described. The collar Q is formed with a nick or transverse groove, q, in its head in a manner similar to ascrew-head to receive an ordinary screw-driven,

The operation of the above described parts is as follows: When the stem is drawn outward, the arm or lever P is turned upon the pivot or arbor p by reason of the pin 19 remaining in the groove Z of the stem, the arm or lever turning upon said arbor p as a center. This movement of the arm or lever causes its inclined or beveled free end 17 to press against the clutch-actuating spring and slide over the end of the same until its point enters the notch 0 This will have the effect of moving the sliding clutch-wheel N inwardly and ofbringing it into engagement with the intermediate pinion, a, of the handsetting mechanism. The engagement of the inclined end 1) of the lever with the notch 0 holds the clutch-wheel in operative engagement with the settingwheel, so that by turning said clutelrwheel by the stem the hands of the watch may be readily moved or set to indicate the correct time, all as plainly shown in Fig. 5 of the drawings.

When it is desired to disengage the sliding double clutch-wheel and the wheel of the handsetting mechanism,the stem is forced inward. This causes the U shaped portion 2 of the arm or lever Pto be moved outward around arbor p until the point on its beveled end becomes disengaged from the notch 0" in the clutchspring 0, when the latter draws the settingwheel and the sliding clutelrwheel out of gear and causes the winding mechanism to resume its normal or geared position.

In order to remove the stem L from the watch, as is often necessary, the collar Q is partially unscrewed from the arbor p" by means of an ordinary screw-driver fitted in the notch q, as before mentioned. This has the efiect of drawing the arm or lever A toward the under side of the dial and withdrawing the pin 19 from the groove Z in the stem, as shown in Fig. 6 of the drawings. All connection between said pin and stem having been thus severed, the said stem can be withdrawn from the watch without further disturbing or moving the lever and collar. The stem can be as readily replaced in the watch and afterward secured by screwing the collar back upon its arbor.

It will be seen from the foregoing that this mechanism is compact and simple, that the winding and setting operations may be performed readily, and that the stem and crown can be readily removed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a stem winding and setting watch, of the grooved stem L Z, the sliding double clutch -wheel N, the clutchspring 0, engaging the groove in the said double clutch-wheel and provided with a notch in its free end, the U-shaped arm or lever P, having the threaded arbor p and the pin p", and the internally-threaded cap Q, substantially as set forth.

2. The coi'nbination, in a stem winding and setting watch, of the grooved stem L l, the arm or lever having the threaded arbor p and the pin 1), and the internally-t1]readed cap Q, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

SIDNEY CALVERT SMITH.

Witnesses:

D. E. SEYBEL, A. 0. SMITH. 

